If he asks for 15m, and wants to be a pain in the arse while De Ligt is playing for us, constantly asking for better wages and asking for a move to another club in a couple years, so Raiola can earn more money, then yeah.
I feel similarly and like City, we also have just one player currently under Raiola management - Xavi Simons. Like Sandler, they are young so the demands from an agent like pizza boy are non-aggressive but that will quickly escalate once they enter into the first team. Txiki et al have experience with Raiola and it's a sound approach to minimize deals involving him